Abstract: In embodiments of a method for visually guided access cavity preparation, the method makes use of a 2D image of a phantom implant matching a desired access cavity path to a pulp chamber of a tooth anatomy, the phantom implant being non-tapered along its length and having a diameter no greater than 1.0 mm. The phantom implant is overlaid over a 2D or 3D image of the tooth anatomy and drilling of the access cavity path is monitored using a visual display that compares the drilled access cavity path to the desired access cavity path.

Abstract: In embodiments of a method for visually guided access cavity preparation, the method makes use of a 2D image of a phantom implant matching a desired access cavity path to a pulp chamber of a tooth anatomy, the phantom implant being non-tapered along its length and having a diameter no greater than 1.0 mm. The phantom implant is overlaid over a 2D or 3D image of the tooth anatomy and drilling of the access cavity path is monitored using a visual display that compares the drilled access cavity path to the desired access cavity path.

Abstract: A set of at least three endodontic files, the first file of the set being entirely non-landed and tapered and having a diameter at its tip end which is smaller in diameter than that of a second and a third file of the set at their respective tip end, and the second and third files each having the following characteristics: a machined length, preferably 16 mm, having cutting surfaces thereon and starting at a tip end and extending less than the overall length of the file (preferably 25 mm); an active length starting at the tip end and extending to at least half of the machined length, the active length being tapered; a non-active length extending a remainder of the machined length, the non-active length being non-tapered; and the active length being landed in the first one-third and non-landed in the remaining two-thirds of its length.

Abstract: A radiant drying system includes a radiant energy source such as a lamphead with a mercury vapor lamp which produces radiation in the infrared and ultraviolet spectral ranges. Water-filled tubes extend through the lamphead below the lamp for filtering some of the infrared radiation. A housing or filter assembly is mounted on the bottom of the lamphead and includes downwardly-diverging walls and a bottom enclosed by a light-transmitting lens, which filters the ultraviolet radiation to reduce the output thereof in the "B" (beta) range. A fluid system circulates water through the lamphead and air through the housing assembly.